Kurt,
I tried the latest version of NetCDF’s nccopy utility on your files and it also
failed. Same with an old NetCDF v4.2/HDF5 v1.8.9 version.
So the files seem wrong/corrupted for an unknow reason, or created with a
specific NetCDF/HDF5 version which include a compatibility break.
Did you get answer from NOAA?
I’m not sure if GDAL should handle this case (skip failed chunks and set them
to nodata).
Best,
Julien
De : gdal-dev <gdal-dev-boun...@lists.osgeo.org> De la part de Kurt Schwehr
Envoyé : mardi 12 janvier 2021 00:52
À : gdal dev <gdal-dev@lists.osgeo.org>
Objet : [gdal-dev] netCDF chunk fetch failed
Hi all,
In a build of gdal 3.2.0, I'm seeing this error: "netCDF chunk fetch failed"
for 2 out of 5 subdatasets. Is there an easy way to handle this so the bad
data is returned as the nodata value? And also, any idea what is actually
wrong with the netcdf files?
I am in contact with the NOAA folks who made this data.
Thanks!
-kurt
gsutil cp
gs://gcp-public-data-goes-16/ABI-L2-FDCF/2017/263/21/OR_ABI-L2-FDCF-M3_G16_s20172632115407_e20172632126173_c20172632126283.nc
.
gsutil cp
gs://gcp-public-data-goes-16/ABI-L2-FDCF/2018/123/12/OR_ABI-L2-FDCF-M3_G16_s20181231215382_e20181231226149_c20181231226258.nc
.
gsutil cp
gs://gcp-public-data-goes-16/ABI-L2-FDCF/2018/324/18/OR_ABI-L2-FDCF-M3_G16_s20183241845341_e20183241856108_c20183241856213.nc
.
gsutil cp
gs://gcp-public-data-goes-16/ABI-L2-FDCF/2020/247/16/OR_ABI-L2-FDCF-M6_G16_s20202471650186_e20202471659494_c20202471700318.nc
.
for subdataset in Area Temp Mask Power DQF; do
echo $subdataset
(gdalinfo -stats
NETCDF:OR_ABI-L2-FDCF-M3_G16_s20183241845341_e20183241856108_c20183241856213.nc:$subdataset
| grep 'Band 1');
done
Area
Warning 1: netCDFDataset::valid_range: min > max:
min: 0.000000
max: -6.000000
ERROR 1: netCDF chunk fetch failed: #-101 (NetCDF: HDF error)
ERROR 1:
NETCDF:OR_ABI-L2-FDCF-M3_G16_s20183241845341_e20183241856108_c20183241856213.nc:Area,
band 1: IReadBlock failed at X offset 19, Y offset 10: netCDF chunk fetch
failed: #-101 (NetCDF: HDF error)
Band 1 Block=226x226 Type=Int16, ColorInterp=Undefined
Temp
Warning 1: netCDFDataset::valid_range: min > max:
min: 0.000000
max: -6.000000
Band 1 Block=226x226 Type=Int16, ColorInterp=Undefined
Mask
ERROR 1: netCDF chunk fetch failed: #-101 (NetCDF: HDF error)
ERROR 1:
NETCDF:OR_ABI-L2-FDCF-M3_G16_s20183241845341_e20183241856108_c20183241856213.nc:Mask,
band 1: IReadBlock failed at X offset 4, Y offset 11: netCDF chunk fetch
failed: #-101 (NetCDF: HDF error)
Band 1 Block=226x226 Type=Int16, ColorInterp=Undefined
Power
Band 1 Block=226x226 Type=Float32, ColorInterp=Undefined
DQF
Band 1 Block=226x226 Type=Byte, ColorInterp=Undefined
_______________________________________________
gdal-dev mailing list
gdal-dev@lists.osgeo.org
https://lists.osgeo.org/mailman/listinfo/gdal-dev
